text: In polymer chemistry, MALDI can be used to determine the molar mass distribution. Polymers with polydispersity greater than 1.2 are difficult to characterize with MALDI due to the signal intensity discrimination against higher mass oligomers.
  A good matrix for polymers is dithranol or AgTFA. The sample must first be mixed with dithranol and the AgTFA added afterwards; otherwise the sample will precipitate out of solution.